Add PageGuard - free all-in-one website health scanner

[sleepyxpad-jpg]

What is PageGuard?

PageGuard is a free all-in-one website health scanner that checks SEO, performance, accessibility, and best practices in a single scan — similar to Lighthouse but available as a hosted service with a REST API.

Why it belongs in this list

SREs routinely need to audit web properties for regressions across performance, accessibility, and SEO as part of release validation and ongoing reliability checks. PageGuard provides:

• Unified health scanning — SEO, Core Web Vitals, accessibility (WCAG), and best practices in one call
• AI-powered action plans — prioritized, actionable remediation steps rather than raw scores
• Open REST API with CORS support — easy to integrate into CI/CD pipelines, runbooks, or monitoring dashboards (API docs)
• Free to use — no sign-up required, open access

Addition

Added under SRE Tools section, consistent with the existing format:

* [PageGuard](https://pageguard.qiudeqiu.workers.dev) - Free all-in-one website health scanner covering SEO, performance, accessibility, and best practices, with AI-powered action plans and an open REST API

GitHub: https://github.com/sleepyxpad-jpg/pageguard